-4=-2(r+1)

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Solution for -4=-2(r+1) equation: 



-4=-2(r+1)

We move all terms to the left:

-4-(-2(r+1))=0



We calculate terms in parentheses: -(-2(r+1)), so:

-2(r+1)

We multiply parentheses

-2r-2

Back to the equation:

-(-2r-2)



We get rid of parentheses

2r+2-4=0

We add all the numbers together, and all the variables

2r-2=0

We move all terms containing r to the left, all other terms to the right

2r=2

r=2/2

r=1

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